CLERKE'S Island lies on the western side of the American continent, in N. Lat. 63. 15. and E. Long. 169. 30. It was discovered by Captain Cook in his last voyage, but a landing could not be effected. At a distance it appeared to be of considerable extent, and to have several hills connected with the low grounds in such a manner as to make it look like a group of islands. Near its eastern extremity is a little island remarkable for having three elevated rocks upon it. Both the large and small island are uninhabited.